On the social dimensions of such words as PAREPIDHMOS and PAROIKOS and
so forth, you might want to look at John H. Elliott, _A Home for the
Homeless: A Sociological Exegesis of 1 Peter, Its Situation and
Strategy_ (Fortress Press, 1981).

It seems also that any consideration of the usage of such terms in the
NT should take into account the theological impact of apocalyptic
eschatology on the usage. That is, regardless of the actual social
location of the writer, the intended readers, or the characters
described in the narrative, the usage of such words may may be colored
by the idea that all believers are "strangers and exiles" on earth and
maintain only a heavenly "citizenship" (eg, Paul's usage of POLITEUMA
in Phil 3:20).